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Münster 2017 – wissenschaftliches Programm

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T: Fachverband Teilchenphysik

T 80: Neutrinophysik 6 (Szintillatorexperimente)

T 80.6: Vortrag

Mittwoch, 29. März 2017, 18:10–18:25, H 2

Improvement of Position Reconstruction in Borexino — •Johann Martyn for the Borexino collaboration — Johannes Gutenberg-Universität Mainz

Borexino is measuring neutrinos through scintillation events in the target volume, which are intrinsically undistinguishable from the radioactive background. Using time of flight of the scintillation light to reconstruct the position of the events it is possible to construct a fiducial volume wich greatly surpresses the gamma background. Currently the neutrino interaction point in the Borexino detector is reconstructed with an uncertainty of 15cm at 1 MeV and shows systematic shifts at the edge of the detector. For the Borexino experiment this behaviour can be handled by using a fiducial volume, but for the upcoming search for sterile neutrinos in Borexino (SOX) it is important to use a maximal volume and thus to understand the systematic shifts close to the detector edge and if possible remove them and it is useful to have a position reconstruction as good as possible. This talk will present the improvements on the current position reconstruction algorithm of Borexino and describe the systematic shifts and their handling.

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